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I wrote earlier that for transmission through the earth cavity, Tesla used high energy to stimulate the resonance cavity. The minimum value given is 75kW. Maybe it's a way of implementation because we don't want to make a wave, just connect to it.

Moderators please remove if to OT. I'm curious about a power supply that I have used on my coils.

On the very long list of things I don't understand. I've been trying different power supplies with my Zenneck coils experiment. I don't understand how this selenium rectifier is delivering results that a power diode does not. [/size]I'm measuring the 16VAC output of the transformer in parallel to the rectifier.The circuit only oscillates when the rectifier is in the circuit.The DC output on a DMM is around 8V or 16VAC on same DMM. It gets better results than by DC power supply at 12VDC . Stronger field more plasma etc.

With the dc supply it takes at least 12v for oscillations 150ma. Continuous oscillation. With half rectified ac nothing on other adapters or the the power supply above. It’s only when the rectifier is part of the circuit. I see 50hz flickering when activated via the rectifier and 100ma current draw.

Hi Jim,I'm very limited when it comes to electronics,but don't you need 4 diodes to make a bridge rectifier?artv

For a full wave rectifier yes, However the selenium rectifier on the power supply I am testing is only 1/2 rectified and produces better results on my coils for less power than DC, I'm trying to understand why. 1/2 rectified with a power diode does not produce the same results.

Experiment Experiment. Instead of wire connecting two tesla coils -- Distilled Water.So i cut a 5 feet of plastic pipe in half so it formed a vessel. Filled it with distilled water and using alligator clip connected end of coil and water .Coils are tuned so when connected with wire you can see lit light bulb on receiving side. Power Level low so no transmission without a connection.In my opinion this could be interesting if one can make a power transmission. Measured over 20M Ohm of resistance. Is it possible to match impedance or surface wave transmission is the only option??

In my opinion this could be interesting if one can make a power transmission. Measured over 20M Ohm of resistance. Is it possible to match impedance or surface wave transmission is the only option??

The laws which govern the action are pretty straightforward. If the induced charges/potential repel each other and they do then they must travel on the surface of the conductor and not inside it. Also, Power=(V x I), so the power transmitted relates to the electrical pressure times the number of charges moving due to the applied electrical pressure. Therefore in order to increase the real power across an "insulator" the potential must rise to a level sufficient to conduct.

What many find hard to fathom is that Tesla was generating ten's of millions of volts potential in a very small time frame which made every insulator conduct. So when the experimenter only generates maybe 500kV in the milliamp range in there Tesla coil and little happens they think it cannot work. Think of it like this... consider the minor effects your setup produces then consider what happens in a lightning strike. Imagine what would happen if you could produce an 8 foot lightning bolt in your garage?, lol. Now were into Tesla's realm and not only would it smoke all electronics within hundreds of feet but your vehicle would probably start on fire.

From what I can see the first problem is an electronic driver for your primary which is grossly under powered. As Tesla said the goal is to charge a capacitor to the highest possible voltage and discharge it violently through the primary in the smallest time frame with no alternations or reversal. In effect, your trying to tap the primary with a spoon producing AC oscillations where Tesla smashed it with a 20 kg sledge hammer in a single blow with no oscillations.

It is no easy thing but I can tell you from experience that when you do get it right all hell breaks loose. Quite literally everything becomes a conductor in ways few would expect. Now one could ask, if we could create an environment in which "all energy" was now free to move how many different kinds of energy are present which could move?. I believe Tesla implied he was not generating energy per se but producing a conduit for external energy to flow through.

Here is the procedure, we input X energy to create an energy conduit which allows Y external energy to flow through it. Then we capture X and Y energy recycling X back to the input leaving Y energy for our use. It's like putting up a sail on a boat and capturing the wind energy, we did not create the wind nor the energy from it we just created a mechanism to harness the wind energy already present.

The laws which govern the action are pretty straightforward. If the induced charges/potential repel each other and they do then they must travel on the surface of the conductor and not inside it. Also, Power=(V x I), so the power transmitted relates to the electrical pressure times the number of charges moving due to the applied electrical pressure. Therefore in order to increase the real power across an "insulator" the potential must rise to a level sufficient to conduct.

onepower I do realize I know small fraction of what Tesla was doing. High power + high voltage sure can make magic. Allow me to quote Tesla :As regards the rise of potential through resonant action, of course, theoretically, it may amount to anything since it depends on self-induction and resistance and since these may have any value. But in practice one is limited in the selection of these values and besides these, there are other limiting causes. One may start with, say, 1,000 volts and raise the E. M. F. to 50 times that value, but one cannot start with 100,000 and raise it to ten times that value because of the losses in the media which are great, especially if the frequency is high. It should be possible to start with, for instance, two volts from a high or low frequency circuit of a dynamo and raise the E. M. F. to many hundred times that value. Thus coils of the proper dimensions might be connected each with only one of its ends to the mains from a machine of low E. M. F., and though the circuit of the machine would not be closed in the ordinary acceptance of the term, yet the machine might be burned out if a proper resonance effect would be obtained.

What many find hard to fathom is that Tesla was generating ten's of millions of volts potential in a very small time frame which made every insulator conduct. So when the experimenter only generates maybe 500kV in the milliamp range in there Tesla coil and little happens they think it cannot work. Think of it like this... consider the minor effects your setup produces then consider what happens in a lightning strike. Imagine what would happen if you could produce an 8 foot lightning bolt in your garage?, lol. Now were into Tesla's realm and not only would it smoke all electronics within hundreds of feet but your vehicle would probably start on fire.

My problem with use of high power spark gap tesla coil is interference. State I live in prohibits use of such transmitters by law. It might be very entertaining to recreate "The Philadelphia Project" but I am certain that it would lead me to jail sentence

Wireless power transfer concept presented by Wesley has been researched, tested and finally granted patent by US Patent Office. If for some reason my posts make impression Im trying to build or copy perpetual motion device aka free energy device than Im sorry for confusing the readers. This Is not a free energy device.

Dr Corum in his patent experimentally proved a concept of wireless energy transmission over an interface. You can find him doing this with 15volts peak to peak alternating current. Other calculations provided in the patent are: 100khz, 8meter high terminal, 5kv charge at top load - "The guided field strength curve falls off at between 4000 - 7000 Kilometers"

Most likely its pretty expensive to construct such a device and that's how I came up with my Experiment.Instead of dealing with Earth as lossy medium that changes its parameters use water. Seneca lake experimentThan make it even easier and have a raised (suspended) container with water in it. Tesla coils are used only to show lack of conductivity in old fashioned manner. No need to deal with ground plane image theory. I might be mistaken. This is why I posted it. Im looking for suggestions and wonder if there is any interest in surface wave experiments. If none let me know and ill stop littering this forum.

Dr Corum in his patent experimentally proved a concept of wireless energy transmission over an interface. You can find him doing this with 15volts peak to peak alternating current. Other calculations provided in the patent are: 100khz, 8meter high terminal, 5kv charge at top load - "The guided field strength curve falls off at between 4000 - 7000 Kilometers"

Fair enough, the patent information is interesting though because as we all know a 100khz, 8m high, 5kv Tesla coil cannot transmit 4000 km. More like 1m distance in good conditions for those of us who have built and tested them in the past. I think it's kind of neat because the patents never tell the full story and we have to connect the dots for ourselves. What I can tell you is I have built many systems similar to yours and not in a million years will it even transmit power across the street. It simply does not have the capacity nor the required qualities to do this.

Therefore... it must be something else, something missing as I explained. People need to get past this notion of EM waves travelling through the atmosphere in order to make any progress in my opinion.

With all due respect he also tends to ban some individuals who have opposite opinion.

The main difference between us is that (I believe that) he needs to make money on any activity he does..I see his YouTube as very professional, but not much beyond that .It is just his narrow field of expertise he is good at.

Roke is an electronics engineering company that primarily provides contract research, product development and manufacturing for a wide range of U.K. and international customers. Its team currently comprises more than 350 engineers focused on developing advanced sensors, communications systems and network solutions for a diverse range of applications

A Zenneck wave is produced at the zero of the reflection coefficient of a plane incident TM wave (at the Brewster angle of incidence) on an air-dielectric interface, whereas surface waves are produced when the TM reflection coefficient is infinite. Both the Zenneck wave and the surface wave are TM waves and are nonradiating, as they have, in general, exponentially decaying fields with distance. For the Zenneck wave, the evanescent transverse field components do not change appreciably with frequency (because the phenomenon of Brewster angle is independent of frequency), whereas for a surface wave, with an increase of the frequency the wave is more closely coupled to the surface.

At Wardenclyffe Tesla operated at frequencies from 1,000 Hz to 100 kHz. He found the frequency range up to 30 – 35 kHz, “to be most economical.”

Quote

Based upon an analysis of the Colorado Springs Notes and other sources [including Corum & Corum] it appears a basic World System oscillator would develop a wave complex with an extremely low frequency (ELF) in the 6 – 1000 Hz range [obtained with an alternator, NTAC, p. 155] plus a very low frequency (VLF) component around 25 – 35 kHz. Tesla specified a frequency of 925 Hz for power transmission in the patents “System of Transmission of Electrical Energy” U.S. Patent No. 645,576, dated March 20, 1900 and “Apparatus for Transmission of Electrical Energy” U.S. Patent No. 649,621, dated May 15, 1900.

Experiment Experiment. Instead of wire connecting two tesla coils -- Distilled Water.So i cut a 5 feet of plastic pipe in half so it formed a vessel. Filled it with distilled water and using alligator clip connected end of coil and water .Coils are tuned so when connected with wire you can see lit light bulb on receiving side. Power Level low so no transmission without a connection.In my opinion this could be interesting if one can make a power transmission. Measured over 20M Ohm of resistance. Is it possible to match impedance or surface wave transmission is the only option??

Thank You P.S.So far I did not succeed

yeah why not make a mini tesla coil or use a TV lopt so it creates a plasma spray from loads of sharp spikes and put into a mesh tube to create an ion field anduse magnets to direct theions out to a collector ?

https://www.tntech.edu/engineering/research/cesr/wireless-power/power-through-earth.phpEarth Transmission Wirelessly sending power through the earth is a project funded by the National Science Federation (NSF). The purpose of this experiment is to send power to sensors in a field an and to determine the characteristics and viability of sending power within the earth. The principle of earth transmission is similar to the single wire wireless power transfer characteristics of a coil. The earth completes a path between the top and bottom electrode of the system. Placing a current through the top electrode of the well will cause a current that will transmit into the earth and propagate across the skin layer of the earth.

It is no easy thing but I can tell you from experience that when you do get it right all hell breaks loose. Quite literally everything becomes a conductor in ways few would expect.

You know this from experience? What did you do to "make all hell break loose? What unexpected ways are making everything become a conductor? If you did this once, then why not do it every time? Please tell me the experimental conditions that created this effect.